i'm sure you have a HMA, homeowner ass. send a letter to them, explain your situation.
Usually, they go at the house make outside inspection and send them a review with the policies.
They also send how many days they have in order to repair or do the yard.
If they don't do anything, HMA send a company and make the requirement by the policies, and later they send to the owner the bill.
If you don't have HMA, look in your community/town what is the law said.